Of course it’s a fish. But it is called a parrotfish since it is so colorful and has a very cute beak-like mouth. This “beak” is actually exposed bone and not true teeth. It uses that hard mouth to eat the algae off of the hard coral on which it grows. Parrotfish help to keep coral reefs healthy by eating excess algae. Overfishing removes too many parrotfish from a reef and the health of the ecosystem suffers.

Because a parrotfish scrapes off some of the coral as it cleans, the ground up coral limestone passes through the parrotfish’s body and is pooped out. A large parrotfish can poop out over 800 pounds of sand per year!

Parrotfish are also fascinating because of the way that they can change from female to male. Some parrotfish remain female for their entire lives, but others, as they get older, change from female to male. And as they change, their colors change becoming brighter and more vivid with beautiful markings.

The sleeping habits of some parrotfish are a wonder to see. Before settling down for the night, the parrotfish burps out a slimy mucus sleeping sack which completely covers the fish. This keeps predators, or bigger fish who might like to eat the parrotfish, from smelling their nighttime snack. They swim right by the sack of slime, not knowing that the parrotfish is hiding inside.

The parrotfish is an amazing creature. You can thank the parrotfish for being beautiful, and industrious and interesting as all get out. But you can especially thank the parrotfish for those white, sandy beaches on which we play. Yes, parrotfish poop does contribute to that silky smooth, ground-up limestone sand that is so much fun to dig in. Here’s a silly song by Robert Sams for the BLUE Ocean Film Festival (in 2 versions!) to help you thank the parrotfish:

Pinecone Fishfacts:

The pinecone fish, sometimes called the pineapple fish, is a tough little deep-sea dweller that grows to about 5 inches or 13 centimeters in length. It is covered with bright yellow to orange hard scales, called scutes, that are vibrantly outlined in black accentuating its pinecone-like appearance. Its sharp spines and locking dorsal and pelvic fins discourage predators. If they attempt to swallow the swimming pinecone, they risk getting it stuck in their throat.

It prefers to live in rocky areas of the deep ocean with reefs and caves where it can hide during the day. The fish emerges at night to feed on brine shrimp, small fish and plankton that it attracts to its mouth by way of two glowing organs located on its chin. These organs house bioluminescent bacteria that glow an orange-yellow during the day and dim to a bluish-green at night. The bacteria benefits by having a host that provides it with an advantageous place to grow. The pinecone fish benefits by using the the glow to attract meals. This is called a symbiotic relationship where both organisms have something to gain from the relationship.